1 /* 2 * Copyright (C) Research In Motion Limited 2010. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef SVGPathByteStreamSource_h 21 #define SVGPathByteStreamSource_h 22 23 #if ENABLE(SVG) 24 #include "FloatPoint.h" 25 #include "SVGPathByteStream.h" 26 #include "SVGPathSource.h" 27 #include <wtf/PassOwnPtr.h> 28 29 namespace WebCore { 30 31 class SVGPathByteStreamSource : public SVGPathSource { 32 public: create(SVGPathByteStream * stream)33 static PassOwnPtr<SVGPathByteStreamSource> create(SVGPathByteStream* stream) 34 { 35 return adoptPtr(new SVGPathByteStreamSource(stream)); 36 } 37 38 private: 39 SVGPathByteStreamSource(SVGPathByteStream*); 40 41 virtual bool hasMoreData() const; moveToNextToken()42 virtual bool moveToNextToken() { return true; } 43 virtual bool parseSVGSegmentType(SVGPathSegType&); 44 virtual SVGPathSegType nextCommand(SVGPathSegType); 45 46 virtual bool parseMoveToSegment(FloatPoint&); 47 virtual bool parseLineToSegment(FloatPoint&); 48 virtual bool parseLineToHorizontalSegment(float&); 49 virtual bool parseLineToVerticalSegment(float&); 50 virtual bool parseCurveToCubicSegment(FloatPoint&, FloatPoint&, FloatPoint&); 51 virtual bool parseCurveToCubicSmoothSegment(FloatPoint&, FloatPoint&); 52 virtual bool parseCurveToQuadraticSegment(FloatPoint&, FloatPoint&); 53 virtual bool parseCurveToQuadraticSmoothSegment(FloatPoint&); 54 virtual bool parseArcToSegment(float&, float&, float&, bool&, bool&, FloatPoint&); 55 56 #if COMPILER(MSVC) 57 #pragma warning(disable: 4701) 58 #endif 59 template<typename DataType, typename ByteType> readType()60 DataType readType() 61 { 62 ByteType data; 63 size_t typeSize = sizeof(ByteType); 64 65 for (size_t i = 0; i < typeSize; ++i) { 66 ASSERT(m_streamCurrent < m_streamEnd); 67 data.bytes[i] = *m_streamCurrent; 68 ++m_streamCurrent; 69 } 70 71 return data.value; 72 } 73 readFlag()74 bool readFlag() 75 { 76 return readType<bool, BoolByte>(); 77 } 78 readFloat()79 float readFloat() 80 { 81 return readType<float, FloatByte>(); 82 } 83 readSVGSegmentType()84 unsigned short readSVGSegmentType() 85 { 86 return readType<unsigned short, UnsignedShortByte>(); 87 } 88 readFloatPoint()89 FloatPoint readFloatPoint() 90 { 91 float x = readType<float, FloatByte>(); 92 float y = readType<float, FloatByte>(); 93 return FloatPoint(x, y); 94 } 95 96 SVGPathByteStream* m_stream; 97 SVGPathByteStream::DataIterator m_streamCurrent; 98 SVGPathByteStream::DataIterator m_streamEnd; 99 }; 100 101 } // namespace WebCore 102 103 #endif // ENABLE(SVG) 104 #endif // SVGPathByteStreamSource_h 105